Prostate cancer is the most common cancer for men in the West, while lung and liver cancers are the top problems in Asia. Courtesy of the World Health Organization hide caption

Even seemingly healthful foods can contain unexpected spoonfuls of sugar. Meg Vogel/NPR hide caption

In Sochi, sporting arenas are ready to receive athletes and visitors, but some stores and hotels aren't quite finished. Sonari Glinton/NPR hide caption

Experts say today's heroin problem can be traced back to the aggressive prescribing of opioid drugs like OxyContin about 15 years ago. Toby Talbot/AP hide caption

Russian President Vladimir Putin (left) presents the "Hero of Labour" award to conductor Valery Gergiev, head of the Mariinsky Theatre. AFP/Getty Images hide caption

Red Guards — high school and university students — wave copies of Chairman Mao Zedong's Little Red Book during a parade in June 1966 in Beijing's streets at the beginning of China's Cultural Revolution. More than 1 million people are believed to have died during the decade-long upheaval. Jean Vincent/AFP/Getty Images hide caption

Edgar Gonzalez tries to fix bugs in the bottling machine before a state inspector comes to oversee their first batch of mezcal for export. Marianne McCune/NPR hide caption

Companies have set aside more than $30 billion for victims of mesothelioma, a form of cancer linked to asbestos exposure, since 1980. iStockphoto hide caption

Pitmaster Rodney Scott seasons a roasting hog behind a barbecue restaurant in Birmingham, Ala. Scott has been touring the South with a makeshift barbecue pit to raise money to rebuild his family's cookhouse after it burned down in November. Debbie Elliott/NPR hide caption

For our Cabin Fever playlist, we asked for songs that get your blood pumping and body moving, despite weeks of cold, gray days iStockphoto hide caption